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    <title>ShellCheck: SC2072 – Decimals are not supported. Either use integers only, or use `bc` or `awk` to compare.</title>
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    <h1>SC2072 – ShellCheck Wiki</h1>
    <a href="https://github.com/koalaman/shellcheck/wiki/SC2072">See this page on GitHub</a>
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    <h2
id="decimals-are-not-supported-either-use-integers-only-or-use-bc-or-awk-to-compare">Decimals
are not supported. Either use integers only, or use <code>bc</code> or
<code>awk</code> to compare.</h2>
<h3 id="problematic-code">Problematic code:</h3>
<div class="sourceCode" id="cb1"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb1-1"><a href="SC2072.html#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="kw">[[</span> 2 <span class="ot">-lt</span> 3.14 <span class="kw">]]</span></span></code></pre></div>
<h3 id="correct-code">Correct code:</h3>
<div class="sourceCode" id="cb2"><pre class="sourceCode sh"><code class="sourceCode bash"><span id="cb2-1"><a href="SC2072.html#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="kw">[[</span> 200 <span class="ot">-lt</span> 314 <span class="kw">]]</span>                   <span class="co"># Use fixed point math</span></span>
<span id="cb2-2"><a href="SC2072.html#cb2-2" aria-hidden="true" tabindex="-1"></a><span class="kw">[[</span> <span class="va">$(</span><span class="bu">echo</span> <span class="st">&quot;2 &lt; 3.14&quot;</span> <span class="kw">|</span> <span class="fu">bc</span><span class="va">)</span> <span class="ot">==</span> 1 <span class="kw">]]</span>  <span class="co"># Use bc</span></span></code></pre></div>
<h3 id="rationale">Rationale:</h3>
<p>Bash and Posix sh does not support decimals in numbers. Decimals
should either be avoided, or compared using a tool that does support
them.</p>
<h3 id="exceptions">Exceptions</h3>
<p>If the strings happen to be version numbers and you're using
<code>&lt;</code>, or <code>&gt;</code> to compare them as strings, and
you consider this an acceptable thing to do, then you can ignore this
warning.</p>
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